{
  "manageEntity": {
    "action": "Update",
    "entityId": "402833381",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4ef4fab530073d79b3440d39fe5506cbb9f3620fb68a1275c626ec68a28209a9",
    "signature": "0xeb9640bcad7763d7b33d2fcf9dd760926aa51007a51ab39e28eda7963456f99a3784824c1121ad7dd4575f55fb953184bd413c9277b566d9473f178983c2b3b61b",
    "signer": "0x4383f6c4dA607Dc75651D8AfAB96d6bC02986aD4",
    "userId": "402833381"
  }
}